Search Results - "volcanism"

Megathrust earthquakes and the associated volcanic subsidence by Shah, A. A.

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Assessing volcanic origins within detrital zircon populations – A case study from the Mesozoic non-volcanic margin of southern Australia by Barham, Milo, Kirkland, Chris, Danisik, Martin

“…However, for non-volcanic settings, proving isolated detrital zircon grains are from contemporaneous and potentially remote volcanism is challenging. …”
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Carbonatite ring-complexes explained by caldera-style volcanism by Andersson, M., Malehmir, A., Troll, V., Dehghannejad, M., Juhlin, Christopher, Ask, M.

“…Here, we show that carbonatite ring-complexes can be explained by caldera-style volcanism. Our geophysical investigation of the Alnö carbonatite ring-complex in central Sweden identifies a solidified saucer-shaped magma chamber at ~3 km depth that links to surface exposures through a ring fault system. …”
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Archean komatiite volcanism controlled by the evolution of early continents by Mole, D., Fiorentini, M., Thebaud, N., Cassidy, K., McCuaig, C., Kirkland, Chris, Romano, S., Doublier, M., Belousova, E., Barnes, S., Miller, J.

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40Ar/39Ar geochronology reveals rapid change from plume-assisted to stress-dependent volcanism in the Newer Volcanic Province, SE Australia by Oostingh, K., Jourdan, Fred, Matchan, E., Phillips, D.

“…All Rights Reserved.Here we present 40Ar/39Ar ages of volcanic features in the Cenozoic intraplate Newer Volcanic Province in southeast Australia. …”
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Characterization of attenuation parameters at a variety of scales in volcanic rocks by Di Martino Perez, María Del Pilar

“…Seismic imaging through heterogeneous structures is especially challenging in volcanic environments, in which an important portion of the seismic data is attenuated by scattering and absorption. …”
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Insights from Antarctica on volcanic forcing during the Common Era by Sigl, M., McConnell, J., Toohey, M., Curran, M., Das, S., Edwards, Peter, Isaksson, E., Kawamura, K., Kipfstuhl, S., Krüger, K., Layman, L., Maselli, O., Motizuki, Y., Motoyama, H., Pasteris, D., Severi, M.

“…Here we re-evaluated the record of volcanic sulphate deposition using a much more extensive array of Antarctic ice cores. …”
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Risk perception and volcanic hazard mitigation: Individual and social perspectives by Paton, D., Smith, Leigh, Daly, M., Johnston, D.

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Exploring the plutonic-volcanic link: a zircon U-Pb, Lu-Hf and O isotope study of paired volcanic and granitic units from southeastern Australia by Kemp, A., Hawkesworth, C., Paterson, B., Foster, G., Kinny, Peter, Whitehouse, M., Maas, R.

“…The relationship between plutonic and volcanic rocks is central to understanding the geochemical evolution of silicic magma systems, but it is clouded by ambiguities associated with unravelling the plutonic record. …”
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InSAR Observations of Ground Deformation: Application to the Cascades Volcanic Arc by Parker, Amy

“…This doctoral thesis applies measurements of ground deformation from satellite radar using their potential to play a key role in understanding volcanic and magmatic processes throughout the eruption cycle. …”
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Intermontane basins and bimodal volcanism at the onset of the Sveconorwegian Orogeny, southern Norway by Spencer, Christopher, Roberts, N., Cawood, P., Hawkesworth, C., Prave, A., Antonini, A., Horstwood, M.

“…The Ofte and Røynstaul formations accumulated during rifting and were followed by bimodal volcanism within the Morgedal, Dalaå, and Gjuve formations. …”
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Early to middle paleozoic volcanism of Western Peninsular Malaysia / Quek Long Xiang by Quek , Long Xiang

“…This study reports new whole-rock major and trace elements data with zircon U-Pb age and Lu-Hf isotope data from the Early to Middle Paleozoic meta-volcanic rocks in Western Peninsular Malaysia, consisting of Gerik-Dinding meta-volcanic rocks, meta-dolerite intrusions and Rephens meta-volcanic rocks. …”
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Age and tectonic significance of the Louth Volcanics: implications for the evolution of the Tasmanides of eastern Australia by Dwyer, R., Collins, Bill, Hack, A., Hegarty, R., Huang, H.

“…The older Lower Devonian, calc-alkaline group corresponds to complexly folded, high-intensity curvilinear magnetic anomalies in the Louth region (Louth Volcanics) and are probable equivalents to Lower Devonian volcanics in the northern Lachlan Orogen. …”
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Petrology and geochemical features of Semporna volcanic rocks, South-East Sabah, Malaysia by Elvaene James, Azman Abdul Ghani, Akinola, Oluwatoyin O., Junaidi Asis

“…This study presents new petrographic and geochemical data of volcanic rocks in Semporna area. The volcanic rocks range in composition from basaltic andesite, andesite, dacite to rhyolite, with most of the volcanic shows calc-alkaline affinity with a minor tholeiitic feature. …”
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A relation to predict the failure of materials and potential application to volcanic eruptions and landslides. by Hao, S., Liu, C., Lu, Chunsheng, Elsworth, D.

“…This generalized relation is verified by comparison with approaches to criticality for volcanic eruptions and creep failure. A new relation based on changes with stress is proposed as an alternative expression of Voight’s relation, which is widely used to describe the accelerating precursory signals before material failure and broadly applied to volcanic eruptions, landslides and other phenomena. …”
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Triassic collision in the Paleo-Tethys Ocean constrained by volcanic activity in SW China by Zi, Jianwei, Cawood, P., Fan, W., Wang, Y., Tohver, E., McCuaig, T., Peng, T.

“…A suite of collision-related Triassic volcanic rocks cropping out within the Jinshajiang–Ailaoshan orogenic belt in SW China offers insights into closure of the Paleo-Tethys and associated terrane/continent collision. …”
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The age and origin of volcanics in the Riphean section of the Siberian craton (western Baikal area) by Gladkochub, D., Mazukabzov, A., Donskaya, T., De Waele, B., Stanevich, A., Pisarevsky, Sergei

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Mineralogical and charge properties of volcanic ash soils from west Sumatra, Indonesia by Fiantis, Dian, Van Ranst, Eric, Jusop, Shamshuddin

“…Four volcanic ash soi1 from two toposequences along Mt Marapi and Mt Talaniau, west Sumatra were studied in order to characterize their mineralogical and charge properties. …”
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Identifying the volcanic eruption depicted in a Neolithic painting at Çatalhöyük, Central Anatolia, Turkey by Schmitt, A., Danisik, Martin, Aydar, E., Sen, E., Ulusoy, I., Lovera, O.

“…The magmatic longevity recorded by quasi-continuous zircon crystallization coupled with new evidence for late-Pleistocene and Holocene explosive eruptions implicates Hasan Dagi as a potential volcanic hazard. © 2014 Schmitt et al.…”
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Volcanic SiO2-cristobalite: A natural product of chemical vapor deposition by Schipper, C.I., Rickard, William, Reddy, Steven, Saxey, David, Castro, J.M., Fougerouse, Denis, Quadir, Z., Conway, C., Prior, D.J., Lilly, K.

“…Cristobalite is a low-pressure, high-temperature SiO2 polymorph that occurs as a metastable phase in many geologic settings, including as crystals deposited from vapor within the pores of volcanic rocks. Such vapor-phase cristobalite (VPC) has been inferred to result from silica redistribution by acidic volcanic gases but a precise mechanism for its formation has not been established. …”
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